I tried the latest native Java in OS X 10.8 and Requiem didn't work. So now I'm running the latest Java from the Java website and still no go. I've tried both drag and drop and automatic.
I'm trying to play the 1080p version of 'The Mind of a Chef' from the iTunes store. Since it's a new series maybe iTunes is using a new encryption algorithm.
I went through this on my current gen Mac Pro (sadly 2010). I state this as Requiem does not work with newer hardware. I tried on my 2012 MacBook Air and Mac Mini which didn't work. After days of research I learned current hardware is somehow encrypting or blocking requiem from stripping DRM. Since my Mac Pro's hardware is older, I removed iTunes 11.x completely from that system (running 10.8.3 beta at the time). Aside from keystores and the lot, there is a plethora of files left behind in ~/Library/ and /Library/ folders.
I spent some time searching for anything iTunes related and removed it. Of course, make sure you back up all the info first. If "Time Machine" is backing up your data, great, you also might want to copy them to a USB drive just to be sure. OS X Finder is not set to search for system files by default, and there are quite a few.
In case you don't know, here's how to fine tune Finder searches:
1. Open a Finder window and type in iTunes in the window's Spotlight.
2. Next to the "Save" button just below it, click on the "+" sign. This will bring up the ability to search for the file(s) based on chosen parameters (i.e. kind, size, etc.). There are a ton of search fields and most aren't set on the default list.
3. Select the "Kind" option and in the drop down window select "Other". (You'll notice in mine I already have "System Files" as an option, this isn't set until you follow these steps)
4. Once "Other" is chosen, you will see a long list of search parameters to choose from. Select as many as you want but make certain you select "System Files".
5. Returning to the "Kind" drop-down menu, select "System Files". This will include system files in your search.
6. Finally, select "are included", and your search results should change based on the set search parameters.
This will allow you to see iTunes files located in your /Library/ and /System/~folders. Delete anything relating to iTunes. You may want to logout or reboot. Install iTunes 10.7 and all should be working.
Hope this helps! I was able to strip all my 1080P, 720P, etc iTunes movies. My music and books are already DRM free. Good luck!